01-09-2012, 12:23 PM
Fingerprint Recognition in Biometrics
Fingerprint.ppt (Size: 1.16 MB / Downloads: 38)
Biometrics
Biometrics is an advanced technology for superb security and authentication .The very term "biometric” it represent that "bio" means related to the biological study and "metric " means something, which is related to measurement. In network environment security is a crucial factor.
Method of Verification
There are two methods of verification for security.
Psychological Verification
Verification of the organs of the human being, which will have unique identification.
There are five types of verifications.
These are:
Fingerprint.
Handprint.
Face measurement.
Retinal scans.
DNA analysis.
Finger print
It involves the user placing his finger over a glass-plate, which resides over a high-resolution camera, which uses optical or electromagnetic means to take its snapshot.
Handprint
It compares a 3D image of the users hand to that present in the system database. It is somewhat similar to finger print verification.
Retinal scans.
It involves imaging of the blood vessels in the retina of the eye when infrared light of a certain frequency and wavelength is incident upon it. This energy is absorbed by the blood vessels is different in different individuals.
Face measurement
Measuring this is as simple as taking a picture and analyzing the image from a security video capture. This technique enables the computer to use your face as your password and matching these to an existing database
Behavioral Verification This involves in oral thing done by the individual.
There are 3 types of behavioral verifications,
Typing
Signature
Voice
Typing
Some systems measure things you do in addition to the things you are, you will notice that your typing has a certain pattern. Some letters follow others in quick succession, while others take longer.
Minute score matching
A good quality fingerprint contains 25 to 80 minutiae depending on sensor resolution and finger placement on the sensor.
The false minutiae are the false ridge breaks due to insufficient amount of ink and cross-connections due to over inking.
It is difficult to extract reliably minutia from poor quality fingerprint impressions arising from very dry fingers and fingers mutilated by scars, scratches due to accidents, injuries.